General-Studies Quiz For FCI Phase I 2022- 5th December

Q1. Heavy water implies
(a) water which is used in heavy industries such as thermal power plants
(b) water which contains SO42- and CI– of calcium and magnesium
(c) deuterated water
(d) water which has maximum density
(e) None of the above

Q2. The study of Annual Rings is called
(a) Dendrology
(b) Dendrochronology
(c) Morphology
(d) Horticulture
(e) None of the above

Q3. The study of the internal structure of the plants is called
(a) Taxonomy
(b) Agronomy
(c) Anatomy
(d) Morphology
(e) None of the above

Q4. The branch of botany under which fungi is studied:
(a) Phycology
(b) Mycology
(c) Ethology
(d) Microbiology
(e) None of the above

Q5. Lichens are indicators of
(a) Air pollution
(b) Water pollution
(c) Soil pollution
(d) Radiation pollution
(e) None of the above

Q6. A scientist named Carolus Linnaeus is associated with which one the following:
(a) Plant Classification
(b) Binomial Nomenclature
(c) Identification of plants
(d) Identification of Animals
(e) None of the above

Q7. Presence of which of the following compounds causes algal bloom.
(a) Carbonate + Nitrate
(b) Sulphate + Phosphate
(c) Phosphate + Nitrate
(d) Sulphate + Nitrate
(e) None of the above

Q8. Sound above what level (in decibel) is considered hazardous noise pollution?
(a) 30 dB
(b) 40 dB
(c) 60 dB
(d) 80 dB
(e) None of the above

Q9. The image of the object that we see forms on the retina of our eyes is
(a) always erect
(b) always inverted
(c) erect or inverted depends upon the intensity of light
(d) erect or inverted depends upon the age of the person
(e) None of the above

Q10. Sodium vapour lamp is usually used in street light, because
(a) it is cheap
(b) light from this is monochromatic and will not split through water droplets
(c) it is pleasing to the eyes
(d) it is brightly illuminating
(e) None of the above

Solutions

S1.Ans. (c)
Sol. Heavy water or deuterium oxide (D2O) is an oxide of deuterium which is an isotope of hydrogen.

S2.Ans. (b)
Sol. The annual rings or growth rings in a tree trunk are a measure to date the age of the trees. This study which includes the counting and observing the patterns of the tree trunks, comes under a branch of science called Dendrochronology. The annual rings are seen as concentric rings in the cross section of the tree trunk. Morphology is the study of form of things, patterns and Horticulture is the art or practice of garden cultivation and management.

S3.Ans. (c)
Sol. The study of internal organs and tissues of not only plants but any organism comes under Anatomy. While morphology is the study of external features of plants and animals. Taxonomy, the branch of science concerned with classification, especially of organisms; systematic, Agronomy, the science of soil management and crop production.

S4.Ans. (b)
Sol. The branch of biology under which morphological, anatomical, pathological and genetic studies of fungi are done, comes under the field of mycology. While phycology, ethology, microbiology deal with Algae, Animal behavior and microbes respectively.

S5.Ans. (a)
Sol. Lichens generally are the indicators of air pollution especially sulphur-dioxide. The change in habit of particular lichens indicates the level of pollution, e.g., bushy lichens can only grow well when air is absolutely clean. Lichens grow as crusty forms when there is high level of air pollution. While leafy lichens grow at moderate levels of air pollution.

S6.Ans. (b)
Sol. Binomial nomenclature is a system of providing a name with two components. This naming system given by Carolus Linnaeus is being practised by biologists all over the world. The first name represents the genus while second name represents the species name. For e.g. the scientific name of mango is written as Mangifera indica.

S7.Ans. (c)
Sol. Agricultural & industrial wastes are rich in nitrates & phosphates which over-stimulate the growth of algae (algal bloom) & other plants, causing unsightly scum and unpleasant odors, and robbing the water of dissolved oxygen vital to other aquatic life.

S8.Ans. (d)
Sol. A sound’s loudness is measured in decibels (dB). Normal conversation is 60dB, a lawn mower is about 90dB are harmful, depending on how long and how often one is exposed to them.

S9.Ans. (b)
Sol. The image of the object formed on the retina of our eyes is always inverted, however, optic nerve that carries information to the brain makes the image erect so that we see only erect image.

S10.Ans. (b)
Sol. Sodium vapour lamps fall under the gas discharge category, also known as high-intensity discharge (HID). The lamping compartment of these luminaries have sodium vapor in them, when electricity is passed through, it excites the vapour which in turn produces a yellow glow. Thus, light from these lamps is monochromatic, that is, single colour light that will not split through water droplets, making them efficient to be used in street lights.